/* 边框
[bor-base] {
  border: 1px solid #E5E5E5;
}
-------------------------- */
[bor-base] {
  border: $border-base;
}

/* 圆角大小
[radius1] {
  border-radius: 1px;
}

[radius2] {
  border-radius: 2px;
}

[radius10] {
  border-radius: 10px;
}
...

[circle] {
  border-radius: 50%;
}
-------------------------- */
@for $i from 1 through 100 {
  [radius#{$i}] { 
    border-radius: #{$i}Px;
    overflow: hidden;
  }
}

[circle] {
  border-radius: 50%;
}